Question

Am nevoie de ex 12 urgent!mersi

Answer 1

a)x^2 - x - 6 + 6x^2 - x - 2 - 2x^2 - 2x =

5x^2 - 4x - 8

b)2x^2 - 7x - 30 - x^2 - 5x - 6 - x^2 - x - 12 =

-13x - 48

c)a^2 + 4ab + 3b^2 + 2a^2 + ab - 6b^2 - 3a^2 + 2ab + b^2 =

7ab - 2b^2

d)x(x^2 + 2x + 1) - 2x^2 - x^3 + 3x + x^3 + 6 + 2x^2 - 6 =

x^3 + 2x^2 + x + 3x =

x^3 + 2x^2 + 4x